Morgantown is an unincorporated community located on Mississippi Highway 587 in northwest Marion County, Mississippi, United States. Native Americans were the first to inhabit this area. After 1800, other immigrants arrived and settled the area. Among the earliest were Lieutenant Colonel George Henry Nixon, Robert McGowan, Robert B…Morgantown is an unincorporated community located on Mississippi Highway 587 in northwest Marion County, Mississippi, United States. Native Americans were the first to inhabit this area. After 1800, other immigrants arrived and settled the area. Among the earliest were Lieutenant Colonel George Henry Nixon, Robert McGowan, Robert Baylor, Francis Barnes Lenoir, and William Thomas Lenoir. Morgantown was an early settlement on the Pearl River, and was originally known as LeNoir's Landing after William Thomas LeNoir.